Added Sublime Text theme

As said in my tweet, I haven't used *all* of the color variables from your Less files as they didn't seem to make any sense in this yucky XML document. Then again, I did edit an existing file, so maybe I missed a documentation page that makes it super easy.
So current state: Lines marked with `<!-- ??? -->` are lines that I couldn't find a purpose for (and thus no replacement). `px` as in `10px` has the same color as eg. `@import` or `@include` and that looks kinda silly. Committed at v0.1, but will try to make this better later on, I just don't have any time soon..